/*
 * Copyright 2000-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jetbrains.plugins.groovy.util;

import com.intellij.openapi.project.Project;
import com.intellij.openapi.roots.FileIndexFacade;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.testFramework.LightVirtualFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.groovy.lang.psi.GroovyFileBase;

public class GrFileIndexUtil {

  public static boolean isGroovySourceFile(@NotNull PsiFile file) {
    return file instanceof GroovyFileBase && isGroovySourceFile((GroovyFileBase)file);
  }

  public static boolean isGroovySourceFile(@NotNull GroovyFileBase file) {
    return isInSourceFiles(file.getVirtualFile(), file.getProject());
  }

  private static boolean isInSourceFiles(@Nullable VirtualFile file, @NotNull Project project) {
    if (file != null && !(file instanceof LightVirtualFile)) {
      final FileIndexFacade index = FileIndexFacade.getInstance(project);
      if (index.isInSource(file) || index.isInLibraryClasses(file)) {
        return true;
      }
    }
    return false;
  }
}
